Role of electron-lattice couplings on charge order in quasi-two-dimensional organic conductors

Yasuhiro Tanaka, Kenji Yonemitsu

研究成果: Article査読

抄録

Charge ordering with structural distortion in quasi-two-dimensional organic conductors θ-(ET)2RbZn(SCN)4 (ET=BEDT-TTF) and α-(ET)2I3 is investigated for an extended Hubbard model with Peierls-type electron-lattice interactions within the Hartree-Fock approximation. It is found that the lattice effects stabilize the experimentally observed charge order substantially in θ-(ET)2RbZn(SCN) 4, whereas the energy gain by a lattice distortion is small and its band structure and Coulomb interactions play an important role to realize the charge order in α-(ET)2I3. The results are consistent with experimental observations and show contrastive roles of lattice degrees of freedom on charge orders in these compounds.

本文言語English
論文番号042204
ジャーナルJournal of Physics: Conference Series
150
4
DOI
出版ステータスPublished - 2009
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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